Alloy



' No Drawing.

Patented Feb 27, 1923.

2 UNITED STATES PATENT orries.

HUGH S. FOOTE, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR T0 STANDARD CHEMICAL COMPANY, OF PITTSBURGH, PENNSYLVANIA.

ALLOY.

To all whom it may concern:

Be it known that I, HUGH S. Foo'rn, a citizen of the United States and a resident of Pittsburgh, in the county of Allegheny and State of'Pennsylvania, have invented certain new and useful Improvements in Alloys; and I do hereby declare the following to bee full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in alloys and more particularly to steel alloys of the structural type as contradistinguished from that which is known in the art as high speed steel,one object of the invention being to provide a steel alloy of great strength without brittleness and without the properties of high speed steel.

A further object is to provide a steel alloy of the character specifiedwhich shall excel in physical performance those alloys which depend for excellence upon the presence of uranium alone or vanadium alone or alloyed with the elements chromium, nickel or molybdenum.

With theseand other objects 'inview, the invention, consists in an alloy as hereinafter described and pointedout in the claims.

In the following tabulation I ive the ingredients of my improved alloy in addition to steel); the first column of percentages being the range permissible in the practice of my invention, the second column being the range of preferable practice, and the third column being the specific composition of a typical specimen.

A specimen of the'steelalloy of my invention, when properly and suitably heat Application filed Kay 20, 1921.

' tive but not exclusive of modifications.

Serial No. 471,193.

treated, will give upon testing the following physical properties;

The steel alloy of my invention is excellently adapted for the manufacture of,- blanking, forming and trimming 'dies, springs,. automobile drive shafts, ball bear- 80 ings and races, and gears.

As an example of the method of making my improved alloy, the following may be stated:

Three hundred and fifty (350) pounds of steel 'turnings may be smelted under lime slag in an electric furnace and refined under a basic carbide slagQ The following ingreclients may be added to the furnace charge:

Ferro-maganese (-80%) two pounds,

Ferro-sili-con (50%) one pound and twelve ounces, V 1

F'erro-vanadium (35%) one pound and five ounces.

Finally, two pounds and 12 ounces of 76 ferro-uranium (38%) may be added to the ladle while tapping. The resultant ingots would weigh 275 pounds.

It will be of course understood that the addition of ferro-silicon, ferro-inanganese 80 and ferro-vanadiu'm in the furnace, and the final addition of ferro-uranium either in the furnace or in the ladle, may be varied to meet the end in view, conditioned only by this particular; that the proportions of uranium and vanadium shall be such as to afford the percentages iven in the range of permissible practice. 11 these and other respects the operation described is illustra- Experiment has demonstrated that a steel alloy such as hereinbefore described, by reason of both elements uranium and vanadium in the alloy within the ranges of proportions specified, without brittleness.

Having fully described my invention what I claim as new and desire to secure by Letters-Patent, is:

1-. An alloy consisting of steel having alloyed therewith, silicon, manganese, uranium and vanadium in the proportions within the rangessubstantially as specified.

2. The herein described uranium-vanadium-steel alloy having the uranium and vanadium alloyed in the proportions within possesses great strength the ranges substantially as specified with steel, sald alloy also containing carbon, silicon and maganese in the proportions within the ranges substantially as specified.

In testimony whereof I have signed this specification in the. presence of two Subscribing witnesses.

HUGH s. FOOTE- 

